Julian

Designed for easy performance of date calculations. Adds a number of days to a date, calculates the number of days between two dates and converts among Gregorian dates, Julian dates, ISO 8601 Week dates, Hermetic Leap Week dates, Julian day numbers and ordinal dates of the form yyyy-ddd. Weekend days may be included or excluded. Program is bilingual: English and German.

Allows easy performance of date calculations. Adds a number of days to a date, calculates the number of days between two dates and converts among Gregorian dates, Julian dates, ISO Week dates, Hermetic Leap Week dates, Julian day numbers and ordinal dates. Weekends may be included or excluded. It has a built-in programming language, with control structures, variables and functions, which allows users to run their own date-processing programs.

A program to search for eclipses (lunar, solar, total, annular and umbral), to calculate the phase of the Moon at any given date and time and to convert between dates in the Gregorian and Julian calendars and dates in four lunar calendars (Goddess Lunar, Meyer-Palmen Solilunar, Hermetic Lunar Week and Liberalia Triday).

A program to convert between dates in various Chinese calendars and dates in the Gregorian and Julian calendars, and to find lunar new year's day and leap months for any year in the Chinese Calendar. Can list anniversaries of Chinese lunar dates such as birthdays. Supports 60-year, 60-month and 60-day cycles, includes Chinese names, and allows searching for dates and times of full moons, dark moons, solar terms, equinoxes, solstices and more.

Date and Time Calculator will let you easily add and subtract dates and time intervals in just a few clicks. It features common date-related calculations, detailed date information (julian day number, day of year, etc), moon phase information, birth date calculator, due date calculator, and much more!